Trial New movies to show
time developmentof air showere.
The movies below were created by using Geomview with the external
StageTools by Davide Cervone(email@example.com) to whom thanks
are due for his help when treating texture mapped objects.
Note that Windows media player is not good for viewing the movies
here; some of them cannot be seen to the last (denoted by (X)).
Unix mpeg_play and QuickTime (for Mac/Mac X and Windows) work fine.
Movie.app on NEXTSTEP also shows similar behaviour as media
player. Real player on windows may work fine.
- (X) A 5 TeV proton rushes onto the
YangBajin array(23 MB, 40 sec)
This moview shows where the YangBajin
air shower station (4300m, Tibet China) is, how the air shower falls on the
air shower detector array, and how their sizes are.
(The square you see is 10km x10km. The detector box is 1 cubic m.
The boxes are placed with a ~ 7.5 m step. The array map is based
on the real data).
A slightly inclined 5 TeV proton primary is injected.
It incidentally produced an electron traveling to the southern
hemi-sphere; one of short life electrons observed
with AMS. (The space-station and shuttle are flying at unrealistic
high altitudes in this movie!).
- A long flight electron(6.1MB)
This shows an example of how the long flight time electron is produced.
The birth place and sink point are rather localized.
- A short flight electron(5.9MB)
This shows short flight time electrons and protons.
One primary is generating a lot of such particles in this
- (X) 20 TeV He shower(29MB)
This is a simple movie which shows typical air showers
falling on the YangBajin altitude. The primary is He of total
energy 20 TeV.
- A 15 TeV proton primary shower falling on the
In this example, particle tracks are shown taking a portion of only
a few m's above the array so that we can see how they fall on the
detectors. Cyan shows photons, yellow electrons and red positrons.
You feel that detecting partilces is not an easy task with
distributed detectors. Photons are very important and thus we need
a lead plate on the detector to convert photons into electron pair.
(X) A shower falling on the YangBajn Array(19MB)
This shows all charged particles. You will get the
dimensional relation clearly. Yellow shows electrons and positrons,
green muons and red protons.
- Other movies to illustrate muon and neutrino generation are
available. See Gallery.